Can Preen be used to treat ice plants, small weeds have already emerged now at end of December near us in S.F bayarea

Preen Extended Control Weed Preventer may be applied as directed (please email us at customerservice@lebsea.com to request a copy of the label/directions) anytime in the growing season prior to pigface/ice plant (Carpobrotus edulis) seed germination to help prevent their weed seeds from germinating for up to six months per application. Thank you!